The Leonkoro Ensemble from Berlin played at the prizewinners festival of the string quartet concert series “Quartettissimo” In 2022, Jonathan Schwarz and Amelie Wallner (violin), Mayu Konoe (viola) and Lukas Schwarz (cello) were awarded first prize at two international competitions, in Bordeaux and London. The quartet demonstrated admirable strength of nerves because they had taken the train from Berlin to Munich during the day in a completely overcrowded compartment.